Algebra.Com's Answer #353745 by Alan3354(69443)  You can put this solution on YOUR website! the sum of a positive number and twice its square is 6.72. find the number \n" );
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document.write( "x + 2x^2 = 6.72 \n" );
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document.write( " Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc) | \n" );
document.write( "Quadratic equation (in our case ) has the following solutons: \n" );
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document.write( " For these solutions to exist, the discriminant should not be a negative number. \n" );
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document.write( " First, we need to compute the discriminant : . \n" );
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document.write( " Discriminant d=54.76 is greater than zero. That means that there are two solutions: . \n" );
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document.write( " Quadratic expression can be factored: \n" );
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document.write( " Again, the answer is: 1.6, -2.1.\n" );
document.write( "Here's your graph: \n" );
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document.write( "It's 1.6\r \n" );
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